Here is a valuable resource for an overview of the books of the Bible. Issues, Etc. had a series with Pastor Bryan Wolfmueller in which he gives an overview of each book. Pastor Wolfmueller, who is equally engaging and knowledgeable, will benefit your understanding of the Scriptures as they continue to reveal God's mercy and salvation for sinners.
You can find Pastor Wolfmueller's "Introducing the Books of the Bible" at this link: Introducing the Books of the Bible (issuesetc.org)
You will also find much more of value to listen at Issues, Etc., hosted by Pastor Todd Wilken, a confessional pastor in the Lutheran Church-Missouri Synod.